fix datadogexporter: instrumentation_scope_metadata_as_tags = true by default

Author: mar4uk

docs/sources/reference/components/otelcol/otelcol.exporter.datadog.md

@@ -182,10 +182,10 @@ The `exporter` block configures the metric exporter settings.
 
 The following arguments are supported:
 
-| Name                                     | Type   | Description                                                                          | Default | Required |
-| ---------------------------------------- | ------ | ------------------------------------------------------------------------------------ | ------- | -------- |
-| `instrumentation_scope_metadata_as_tags` | `bool` | Set to `true` to add metadata about the instrumentation scope that created a metric. | `false` | no       |
-| `resource_attributes_as_tags`            | `bool` | Set to `true` to add resource attributes of a metric to its metric tags.             | `false` | no       |
+| Name                                     | Type   | Description                                                                               | Default | Required |
+| ---------------------------------------- | ------ |-------------------------------------------------------------------------------------------|---------| -------- |
+| `instrumentation_scope_metadata_as_tags` | `bool` | Set to `false` to not add metadata about the instrumentation scope that created a metric. | `true`  | no       |
+| `resource_attributes_as_tags`            | `bool` | Set to `true` to add resource attributes of a metric to its metric tags.                  | `false` | no       |
 
 ### `histograms`
 

internal/component/otelcol/exporter/datadog/config/config_datadog.go

@@ -198,7 +198,7 @@ func (args *DatadogMetricsArguments) SetToDefault() {
 		DeltaTTL: 3600,
 		ExporterConfig: DatadogMetricsExporterArguments{
 			ResourceAttributesAsTags:           false,
-			InstrumentationScopeMetadataAsTags: false,
+			InstrumentationScopeMetadataAsTags: true,
 		},
 		HistConfig: DatadogHistogramArguments{
 			Mode:             "distributions",

internal/component/otelcol/exporter/datadog/datadog_test.go

@@ -29,7 +29,7 @@ func TestConfigConversion(t *testing.T) {
 		// from the official exporter; as such as need to init it all here
 		defaultExporterSettings = datadogOtelconfig.MetricsExporterConfig{
 			ResourceAttributesAsTags:           false,
-			InstrumentationScopeMetadataAsTags: false,
+			InstrumentationScopeMetadataAsTags: true,
 		}
 		defaultHistSettings = datadogOtelconfig.HistogramConfig{
 			Mode:             "distributions",
@@ -84,6 +84,7 @@ func TestConfigConversion(t *testing.T) {
 					delta_ttl = 1200
 					exporter {
 						resource_attributes_as_tags = true
+						instrumentation_scope_metadata_as_tags = false
 					}
 					histograms {
 						mode = "counters"

internal/converter/internal/otelcolconvert/testdata/datadog.alloy

@@ -36,7 +36,8 @@ otelcol.exporter.datadog "default" {
 		endpoint  = "https://api.datadoghq.com"
 
 		exporter {
-			resource_attributes_as_tags = true
+			resource_attributes_as_tags            = true
+			instrumentation_scope_metadata_as_tags = true
 		}
 
 		histograms {